Oracle8i Recovery Manager User's Guide and Reference
Release 2 (8.1.6)

Part Number A76990-01

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Recovery Catalog Views, 16 of 25


RC_LOG_HISTORY

This view lists historical information about the online redo logs. It corresponds to the V$LOG_HISTORY view.

Column  Datatype  NULL  Description 

DB_KEY 

NUMBER 

NOT NULL 

The primary key for the target database. Use this column to form a join with almost any other catalog view. 

DBINC_KEY 

NUMBER 

NOT NULL 

The primary key for the incarnation of the target database. Use this column to form a join with RC_DATABASE_INCARNATION. 

DB_NAME 

VARCHAR2(8) 

NOT NULL 

The DB_NAME of the database incarnation to which this record belongs. 

RECID 

NUMBER 

NOT NULL 

The redo log history RECID from V$LOG_HISTORY. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file. 

STAMP 

NUMBER 

NOT NULL 

The redo log history stamp from V$LOG_HISTORY. RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file. 

THREAD# 

NUMBER 

NOT NULL 

The thread number of the online redo log. 

SEQUENCE# 

NUMBER 

NOT NULL 

The log sequence number of the redo log. 

FIRST_CHANGE# 

NUMBER 

NOT NULL 

The SCN generated when switching into the redo log. 

FIRST_TIME 

DATE 

NOT NULL 

The timestamp when switching into the redo log. 

NEXT_CHANGE# 

NUMBER 

NOT NULL 

The first SCN of the next redo log in the thread. 

CLEARED 

VARCHAR2(3) 

 

'?' if the redo log was cleared with the ALTER DATABASE CLEAR LOGFILE statement; otherwise, NULL. This statement allows a log to be dropped without archiving it first. 


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